Frontend UI Developer - Javascript/HTML5/CSS3

·      7+ years of professional experience in front-end development.

·      5+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.)

·      Strong understanding of JavaScript (ES6+), HTML5, and CSS3.

·      Experience with RESTful APIs, GraphQL, and WebSocket integration.

·      Proficiency in modern build tools (Webpack, Vite, Babel, etc.).

·      Expertise in state management libraries (Redux, MobX) and React Query.

·      Solid understanding of UI/UX principles and responsive design.

·      Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).

·      Familiarity with modern CI/CD pipelines and version control tools (Git).

About koolio.ai

Website: www.koolio.ai

koolio Inc. is a cutting-edge Silicon Valley startup dedicated to transforming how stories are told through audio. Our mission is to democratize audio content creation by empowering individuals and businesses to effortlessly produce high-quality, professional-grade content. Leveraging AI and intuitive web-based tools, koolio.ai enables creators to craft, edit, and distribute audio content—from storytelling to educational materials, brand marketing, and beyond—easily. We are passionate about helping people and organizations share their voices, fostering creativity, collaboration, and engaging storytelling for a wide range of use cases.

About the Full-Time Position

We are looking for a Junior Frontend Engineer to join our fast-growing team on a full-time, hybrid basis. You will be a key contributor in enhancing the user interface of koolio.ai’s AI-powered platform, driving innovation and excellence in audio content creation. You will collaborate closely with senior developers and designers to deliver high-performance, user-friendly web applications that delight our customers.

Key Responsibilities:

• Collaborate with the product and design teams to develop and implement user-friendly web interfaces
• Write clean, efficient, and reusable code using modern frontend technologies
• Ensure responsive design and optimize web pages for performance and scalability across devices
• Debug and resolve issues, improving the overall user experience on the platform
• Assist in integrating APIs and frontend services with the backend
• Stay up-to-date with the latest trends in frontend development and suggest improvements to enhance the platform’s functionality

Requirements and Skills:

• Education: Degree in Computer Science or a related field
• Work Experience: Minimum of 1-2 years of proven experience as a Front-end Engineer or similar role with a focus on user interface development
• Technical Skills:
• Strong proficiency in JavaScript frameworks like ReactJS or Redux
• Proficiency in frontend languages such as HTML, CSS, and JavaScript (ES6+)
• Experience with CSS frameworks (e.g., Bootstrap or Tailwind CSS) for responsive design
• Basic understanding of REST APIs and integration with frontend applications
• Knowledge of version control systems (e.g., Git) and best practices in code management
• Soft Skills:
• Strong attention to detail and a focus on delivering high-quality work
• Ability to work effectively in a remote, collaborative environment with distributed teams
• Willingness to learn new technologies and adapt to a fast-paced startup environment
• Excellent communication and time-management skills, with the ability to manage multiple tasks simultaneously
• Other Skills: 
• Familiarity with Figma or other design tools is a plus. 
• Understanding of SEO principles and how frontend development impacts web performance

Compensation and Benefits:

• Total Yearly Compensation: ₹8-12 LPA based on skills and experience
• Health Insurance: Comprehensive health coverage provided by the company
• ESOPs: An opportunity for wealth creation and to grow alongside a fantastic team

Why Join Us?

• Be a part of a passionate and visionary team at the forefront of audio content creation
• Work on an exciting, evolving product that is reshaping the way audio content is created and consumed
• Thrive in a fast-moving, self-learning startup environment that values innovation, adaptability, and continuous improvement
• Enjoy the flexibility of a full-time hybrid position with opportunities to grow professionally and expand your skills
• Collaborate with talented professionals from around the world, contributing to a product that has a real-world impact

#HiringAlert

We are looking "Software Engineer" for Reputed Client @ Permanent Role.

• Experience: 2 - 4 yrs

Skills :

Primary Skills

•2+ years of experience in Web API, C#.Net, OOPS and Entity framework

•Minimum 1+ years of experience on Web Application development HTML, CSS, JavaScript/JQuery, Entity framework and Linq Queries

•Must have a good exposure on query writing and DB management for writing stored procedures/ user-defined functions

Secondary Skills

•Experience in analysing existing code and debugging.

•Should have a solid understanding of the SDLC processes (Design, Construction, Testing, Deployment)

•Proven experience of delivering on-time and with quality

•Should have good unit testing skills to review his own development and identify all the defects and get it fixed before releasing the code

Desired Skills

•Should have experience in developing ERP applications or Database Intensive Data Entry applications.

•Been on a same role for a period of 2 years or more

•Hands on experience of configuration management and version maintenance

•Prior experience of working in the shipping domain

•Should be able to understand the Functional Specifications and Technical Specifications and develop the application as per the specification provided.

•Full stack developers with experience in Developing products with Angular and C# APIs, from ground-up will be a plus.

Location : Bangalore

• ·       3+ Yrs Solid knowledge of frontend development with a minimum of 2 years of work on ReactJS,/ React native 
• ·       Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• ·       Strong & thorough understanding of Reactjs and its core principles
• ·       Experience with popular Reactjs workflows such as Redux
• ·       Knowledge of isomorphic React is a plus
• ·       Familiarity with RESTful APIs
• ·       Familiarity with modern front-end build pipelines and tools
• ·       High coding standards - understanding of test coverage best practices & test pyramid concept
• ·       Familiar with Continuous Delivery approach
• ·       Experience with Distributed and Concurrent Systems, knowing the tradeoffs between stateful/stateless and synchronous/asynchronous architectures
• ·       Passion about technology and its relationship with product and user experience
• ·       Ability to work independently - identify problems, create plans and implement solutions to them

About Numen (https://numenhealth.com):
Numen Health is a Health-tech company with a goal to reimagine healthcare in India. Through an amalgamation of our healthcare team with the power of AI and the Internet of Things (IoT), we make healthcare easier and accessible through a data-based preemptive approach. Our mission is to facilitate change in the healthcare industry by moving from a reactive approach to a proactive one.
We are a wonderful, young team with experience in scaling up Indian and international businesses from the ground up. We are looking for like-minded and enthusiastic people who are passionate about making a lasting difference and want to help us revolutionize the way healthcare is delivered to a billion Indian!

Our Vision:
To shift the healthcare ecosystem from a ‘Sick-care' approach to a ‘Holistic-healthcare' approach. We aim to do that by enabling doctors and caregivers to move from treating ailments to employing a data-based,
preemptive approach.
About Product:
We offer preventive healthcare programs to individuals to improve their health. These plans are crafted in consultation with their treating doctor and a dedicated care team remotely monitors the progress in real[1]time. For doctors, Numen is a virtual facility to cater to all of their patient’s needs, remotely.
Why Join?
At Numen, you have the opportunity to make tangible changes to the existing healthcare systems in India
making it preventive and affordable. By joining the Numen team, you get to be part of a young, dynamic
team that is passionate about making a change and a fast-paced environment with multiple opportunities to
learn and grow.

Job Overview : 
Software Development Engineers FE will be responsible to participate in all stages of the software product development life cycle. This will include analysing system and user requirements, designing software flowcharts, creating user interfacing applications (Web Or Mobile) , troubleshooting bugs, and running tests to improve system functionality. An ideal
candidate would be someone who has proficiency in React Js, good analytical skills, the ability to anticipate issues and frame remedial actions, and excellent teamwork skills.

Responsibilities:
● Write simple, efficient, and maintainable code.
● Develop, scale and maintain web Applications written in ReactJs.
● Validating the functionality and security of the application.
● Manage individual priorities, deadlines, and deliverables.
● Function well in a fast-paced, rapidly changing environment.
● Ensuring best coding standards and practices to improve and maintain quality.
● Meeting with the engineering and product team to discuss project definitions and goals.

Requrements:
● Bachelor/Master degree in CS or related field from a reputed college.
● 2-6 years of experience in frontend software development.
● Sound knowledge of HTML,CSS, JavaScript and ReactJs.
● Solid grip on the programming basics like DS and algorithms.
● Prior experience in start-ups or health-tech will be a plus.
● Highly effective communication and interpersonal skills
● Strong troubleshooting and debugging skills

Our frontend (React) team is passionate about React Technology and we are working on a few world-class products which have their roots and frontend in React Technology along with Redux, web-hooks, and Reducers. Keeping performance, scalability, usability, and user acceptance in mind, we are looking for a smart frontend engineer that has experience developing a variety of Web Applications using React Technology. (Along with strong frontend expertise, needs a good understanding of how frontend applications work in different browsers and have a mobile responsive design)

Basic roles and responsibilities are mentioned for the engineer at our team:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• You will ensure that these components and the overall application are robust and easy to maintain.
• You will coordinate with the rest of the team working on different layers of the infrastructure.
• Good understanding of async functions and their concepts.
• Your primary focus will be on developing user interface components and implementing them following well-known ReactJS workflows (such as Flux or Redux).
• A Commitment to collaborative problem solving, sophisticated design, and quality product is important.

• Developing new user-facing features using ReactJS
• Familiarity with modern front-end builds pipelines and tools.
• Translating designs and wireframes into high-quality code.
• Thorough understanding of ReactJS and its core principles.
• Experience with popular React.js workflows. (such as Flux or Redux)
• Familiarity with RESTful APIs.
• Building reusable components and front-end libraries for future use.
• Knowledge of modern authorization mechanisms, such as JSON Web Token and Oauth.
• Good knowledge of CSS and other latest frameworks like a tailwind CSS / Bootstrap.

• Experience developing highly scalable Web applications.
• Knowledge of Media Queries and CSS via useful frameworks.
• Strong experience with React frameworks with components like Redux, Flux, Webhooks.
• Good knowledge of code versioning (git / Github)
• Good experience with code deployment on servers like Ubuntu, Linux systems.
• In-depth knowledge of designing and developing software in distributed architectures for multi-tier applications
• Basic understanding of docker to work with different major versions of Node js and database release(Postgres, MySQL, etc)
• Good knowledge to write and train the team to write unit test cases for the application code.

• You would be knowing how to do a basic code review of team and junior NodeJS engineers.

• Experience with deployment and CI/CD is a plus!
• Have worked with Testing libraries
• Good Verbal and Written communication Skills.

• Develop and manage apps on React Native platform
• Analyse, code, debug, test, document & deploy applications
• Provide technical leadership and upgrade architecture design and solution to accommodate future expansion
• Ensure quality control processes are successfully employed.
• Experience in React-Native based app development is a must
• Experience in Mobile app development (Cross platform apps)
• Must have published at least 1 major React-Native app
• Knowledge of service workers implementation for Progressive Web Application (PWA)
• Demonstrated ability with HTML5, CSS3, Bootstrap, jQuery, and other JS frameworks React JS
• Development experience of UI (layouts, animations, etc.)
• Good understanding of Design and Architecture Patterns
• Understanding of iOS and Android Code signing process and deployment model
• Understanding of Unit Testing, Debugging Methodology used in React Native Apps
• Understanding on integration of native modules with React Native code
• Experience with caching and scaling techniques

Responsibilities-

• Developing new user-facing features using React.js, HTML5, CSS3
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

skills-

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Good understanding of HTML5, CSS3 concepts
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (such as Flux or Redux)
• Familiarity with newer specifications of EcmaScript
• Experience with data structure libraries (e.g., Immutable.js)
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements.